Fluid arrangement

Patent metadata

Field	Value
Publication number	US-10408285-B2
Application number	US-201615545589-A
Country	US
Kind code	B2
Filing date	Feb 8, 2016
Priority date	Feb 12, 2015
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A fluid assembly in a hydraulic circuit, comprising one or more reservoirs configured to store fluid. The fluid assembly also includes a pump configured to transport the fluid in the hydraulic circuit and actuate a load from a transmission of a motor vehicle, a pressure accumulator configured to collect pressure built up by the pump and actuate the load, and a valve system configured to allow fluid communication of the load with the pump.

First claim

The invention claimed is:

1. A fluid assembly for fluidic actuation of a first load and a second load of a motor vehicle in a hydraulic circuit, comprising:
a pump configured to convey a fluid in the hydraulic circuit, and actuate the first or second load;
a pressure accumulator configured to accumulate a pressure built up by the pump, and actuate the first or second load;
one or more reservoirs configured to store the fluid; and
a valve system for connecting the hydraulic circuit with the first load, the second load, the pump, the pressure accumulator, and the reservoir, wherein the reservoir is configured to store fluid when a dual-pressure valve is interconnected to the first load and the second load.

2. The fluid assembly of claim 1 , wherein the first load is located in a clutch, and the second load is located in a transmission actuator, and the first and second load are connected to the pump.

3. The fluid assembly of claim 2 , wherein the pump further includes a first discharge direction for actuating the first load and a second discharge direction, opposite the first discharge direction, for actuating the second load.

4. The fluid assembly of claim 1 , wherein the pressure accumulator is connected to the first load and to the second load.

5. The fluid assembly of claim 1 , wherein the valve system includes a setting in which the pressure accumulator and the pump are interconnected to actuate the first or second load.

6. The fluid assembly of claim 5 , wherein the first load is a double clutch that includes a first sub-clutch and a second sub-clutch; and
the valve system further includes a sub-clutch setting in which the first sub-clutch or the second sub-clutch can be actuated by the pump.

7. The fluid assembly of claim 6 , wherein the valve system includes a second sub-clutch setting in which the pump actuates the first sub-clutch or the second sub-clutch, and the pressure accumulator actuates the first sub-clutch or the second sub-clutch, wherein the sub-clutch actuated by the pump is not the sub-clutch actuated by the pressure accumulator.

8. The fluid assembly of claim 1 , wherein the valve system includes a setting in which the pressure accumulator actuates the first load without the pump, and simultaneously, the pump actuates the second load without using the pressure accumulator.

9. A fluid assembly in a hydraulic circuit, comprising:
one or more reservoirs configured to store fluid;
a pump configured to transport the fluid in the hydraulic circuit and actuate a load from a transmission of a motor vehicle;
a pressure accumulator configured to collect pressure built up by the pump and actuate the load; and
a valve system configured to allow fluid communication of the load with the pump, wherein the valve system further includes a dual-pressure valve connected to the pump and reservoir.

10. The fluid assembly of claim 9 , wherein the load is a clutch.

11. The fluid assembly of claim 10 , wherein the clutch includes a first and second sub-clutch.

12. The fluid assembly of claim 11 , wherein the valve system is configured to:
facilitate the pump to actuate the first sub-clutch; and
facilitate the pressure accumulator to actuate the second sub-clutch.

13. The fluid assembly of claim 9 , wherein the hydraulic circuit further includes a motor configured to power the pump.

14. The fluid assembly of claim 9 , wherein the valve system includes a non-return valve configured to prevent the pressure accumulator from transferring the fluid to the pump.

15. The fluid assembly of claim 9 , wherein the valve system includes a seated valve that includes a closed setting configured to connect the pressure accumulator to the load, and an open setting configured to prevent a connection of the pressure accumulator with the load.

Assignees

• Schaeffler Technologies Ag

Inventors

• Herkommer Dominik
• Stehr Reinhard
• Grethel Marco
• Baehr Markus

Classifications

• F15B1/033

  with electrical control means · CPC title

• F16D2048/0269

  Single valve for switching between fluid supply to actuation cylinder or draining to the sump · CPC title

• F16D48/0206 Primary

  in a system with a plurality of fluid-actuated clutches · CPC title

• F16D2048/0275

  Two valves arranged in parallel, e.g. one for coarse and the other for fine control during supplying or draining fluid from the actuation cylinder · CPC title

• F16D2048/0266

  Actively controlled valves between pressure source and actuation cylinder · CPC title